Can be returned. But there must be a premise, that is, there are quality problems that can be returned, or they can be original without unpacking. Once the underwear is opened and tried on, if there is no quality problem, it is very difficult to return it without reason, because no one wants to buy "second-hand" underwear, which is neither hygienic nor affordable, because the freight can be directly bought when returning it. Therefore, there is no quality problem in general underwear, and few people return it. If there is a quality problem, consumers can ask for a refund and ask the seller to compensate for the postage, which is to formally safeguard their own interests.